Justin Bieber has kicked off the music portion of South by Southwest before the real program begins.

The 20-year-old pop star surprised a small crowd at Banger’s Sausage House & Beer Garden in Austin, Texas, on Sunday night.

Audience member Ashley Gregg said Monday that Bieber performed two songs, dedicating “Boyfriend” to ex-girlfriend Selena Gomez, who was backstage.

“This goes out to my baby girl,” Bieber told a crowd of about 100 people.

The bar was hosting an event for Bieber’s manager, Scooter Braun. Surprise performers included Bieber and boy band The Wanted. Cody Simpson, Dan + Shay, Tori Kelly, and Rixton, who are among Braun’s clients, also performed.

The music portion of SXSW, which will feature Lady Gaga, Coldplay, Willie Nelson, and Kendrick Lamar, starts Tuesday.